/Products/Copper Ore Milling Using Sag And Ball Mills

Copper Ore Milling Using Sag And Ball Mills

ASARCO » Milling

The ore is ground into a fine powder by large rotating mills. The two types used in the Mission South Mill are called SAG (semi-autogenous grinding) mills and ball mills. SAG mills use larger pieces of ore to break up the smaller pieces (autogenous — does it by itself). The larger pieces break down as well.

get price

What is the difference between a SAG mill and ball mill?

SAG mills are characterized by their large diameter and short length as compared to ball mills. The inside of the mill is lined with lifting plates to lift the material inside the mill, where it then falls off the plates onto the rest of the ore charge. SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries. Pebble mill

get price

Mills SAG Mills and Ball Mills Asias Resource

2020-2-11  Copper: 2: 5000: 6400: Copper: 1: 5030: 6700: Iron and Steel: 6: 5030: 6700: Iron and Steel: 3: 5030: 6700: Copper: 2: 5030: 7000: Copper: 2: 5030: 6400: Gold: 1: 5030: 6400: Gold: 1: 5030: 6400: Mongolia: 3: 5030: 6400: Iron and Steel: 2: 5030: 6400: Molybdenum: 3: 5500: 8500: Gold: 1: 5500: 8500: China: 2: 5030: 8300: Kyrgyzstan: 2: 5500: 9200: Chrome: 2: 5030: 8300: Iron ore: 1: 6000: 9500: Iron ore

get price

Autogenous mills, semi-autogenous mills and ball mills

2017-7-29  SAG and ballmills for com-minuting gold /copper ore. Site assembly of a large millshell. The resulting global know how of process and plant technology,together with the extensive grinding test facilities in our research anddevelopment centre provide the basis for an optimum design.

get price

Autogenous and Semi-Autogenous Mills FLSmidth

Semi-autogenous grinding uses a minimal ball charge in the range of 6-15% while autogenous grinding uses ore only. SAG and AG Mills operate by lifting ore/grinding media and dropping it on the operating bed of the mill charge. High impacts from lifting ore

get price

Modelling SAG milling power and specific energy

2015-1-1  The ball charge is a function of the bulk fraction of the SAG mill volume (Jb) occupied by balls; the ore retained in the mill is the result of the volumetric filling which depends on the ore size distribution (specially the % +6″ and the % −6″ +1″), on the rotational speed (N/Nc) and on the solid concentration by weight fraction inside the mill which is a function of the solid concentration by weight fraction in the SAG

get price

What's the Difference Between SAG Mill and Ball Mill

2019-11-26  The bearing lining is provided with a snake-shaped cooling water pipe, which can supply cooling water when necessary to reduce the temperature of the bearing bush. The cooling water pipe is made of red copper which has certain corrosion resistance. Ball mill power is relatively large, the appropriate choice of hydrostatic sliding bearing. The main bearing bush is lined with babbitt alloy

get price

Determination and scale-up of the milling parameters of

2017-2-4  The study reports on the grinding test conducted on an oxidised copper-cobalt ore in order to determine the milling parameters using pear-shaped ball mill. Twelve mono sized fractions of an oxidised copper-cobalt ore sample were prepared and wet ground batch wise using a laboratory-scale ball mill at the University of Lubumbashi: -6700 + 4750

get price

Dynamic modelling and simulation of semi

2009-1-1  These SAG milling plants are designed with few pieces of equipment having a large processing capacity, replacing advantageously a large battery of traditional crushers and rod and ball mills. These characteristics make SAG mills an excellent example of critical equipments whose continuous and stable operation is essential to guarantee mineral processing plant profitability (

get price

Power-based modelling of single-stage AG and SAG mill

The SGI equation uses a transfer size between a SAG and ball mill; it is proposed that a synthetic transfer size of 2100 µm be used to model single-stage SAG mills. 5.9ˇ √˙˝ ˛ . ˚ 0.96 0.985˜ !"# ˝ $ ˝ √˙˝ %&’() (2) where: SGI is the SAG Grindability Index, minutes, P80 is the SAG hydrocyclone overflow 80% passing size, µm

get price

ERSEL Ağır Makine San. ve Tic. A.Ş.

2019-9-10  ERSEL Ağır Makine San. ve Tic. A.Ş. Toggle navigation. * Semi-autogenous (SAG) grinding is a grinding process carried out with small amount of ball charge (4-15%) unlike ball mills and with the help of bigger parts crumbling the smaller parts of ore. * To achieve this type of grinding, SAG mills with large diameter and short length have been

get price

why is grind size important in gold iron ore mining

2012-11-25  why is grind size important in gold processing. As a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant. We also supply individual crushers and mills as well as spare parts of them.

get price

China Copper Rod Mill, Copper Rod Mill

Sourcing Guide for Copper Rod Mill: China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: ball

get price

Copper Ore Ball Mills aafo-wien.at

copper ore ball mills baechtold-fahrschule.ch. copper ore ball mills. Aug 18, 2011 A closer look at one of the large ball/SAG Mills spinning and crushing ore at Copper Mountain Mine near Princeton, BC.get price

get price

Tumbling Ball Mill for Sale Dry & Wet Milling for

Tumbling Ball Mill. Specification (mm): Φ1800-Φ4200. Capacity: 3-33t/h. Motor power: 5.5-30kw. Applications: Tumbling ball mill is mainly used in metal and non-metal ore, such as quartz stone, gold ore, iron ore, copper ore, cement clinker, construction waste, and other fields. Email: [email protected]

get price

Modelling SAG milling power and specific energy

2017-12-14  SAG mills operation data abstract Comminution, particularly milling, is on average the largest consumer of energy in mining. Actual com-minution circuits consist in most of the cases in coarse crushing, SAG milling, pebble crushing and sec-ondary ball milling. In these circuits the SAG mill is the largest energy consumer. In many engineering

get price

Henan Mining Machinery and Equipment

Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

get price

Selection of Comminution Circuits for Improved Efficiency

The benchmark circuit varies with plant capacity and ore competency: • Single stage crush/single stage SAG mills and two stage crush/ball mill circuits are typically selected for low throughput plants (<50 t/h) where personnel costs are a large component of costs. •

get price

THE COMMINUTION CIRCUIT DESIGN FOR THE

2018-2-20  The circuit consists of a 60 x 113 primary crusher, two 16 MW SAG mills and two 16 MW ball mills. All four mills are twin pinion with wound rotor motor and gearbox drives. Provision for pebble crushing is provided for primary (hypogene) ore treatment later

get price

Ball Mills Mine Engineer.Com

2012-11-26  Most ball mills operate most efficiently between 65% and 75% of their critical speed. Photo of a 10 Ft diameter by 32 Ft long ball mill in a Cement Plant. Photo of a series of ball mills in a Copper Plant, grinding the ore for flotation.

get price

OSTI.GOV Technical Report: IMPROVING ENERGY

2005-12-1  Depending on the mill size the SAG mills draws between 2 MW and 17 MW. The product from the SAG mill is further reduced in size using pebble crushers and ball mills. Hence, typical gold or copper ore requires between 2.0 and 7.5 kWh per ton of energy to reduce the particle size.

get price

Benchmarking: Bond Copper Mountain

2020-5-20  Ore blend is 80% Pit 3; 20% Pit 2. SAG mill motors have been upgraded to total 13.8 MW by adding cooling to drive transformers (6.9 MW per motor). SAG mill operating with 17% v/v ball charge and 27% to 28% v/v total filling; SAG mill operating typically 10.2 RPM. Ball mills operating 34% to

get price

Determination and scale-up of the milling parameters of

2017-2-4  The study reports on the grinding test conducted on an oxidised copper-cobalt ore in order to determine the milling parameters using pear-shaped ball mill. Twelve mono sized fractions of an oxidised copper-cobalt ore sample were prepared and wet ground batch wise using a laboratory-scale ball mill at the University of Lubumbashi: -6700 + 4750

get price

Energy and Cost Comparisons of HPGR-based Circuits

2020-4-8  The effect of ore variability was not evaluated in this study; however, HPGRs are certainly less sensitive to variation in ore hardness when compared to SAG mills. There is also a question of the differences in liberation characteristics from a SAG mill-ball

get price

THE COMMINUTION CIRCUIT DESIGN FOR THE

2018-2-20  The circuit consists of a 60 x 113 primary crusher, two 16 MW SAG mills and two 16 MW ball mills. All four mills are twin pinion with wound rotor motor and gearbox drives. Provision for pebble crushing is provided for primary (hypogene) ore treatment later

get price

Wear of grinding media in the mineral processing

Within the mineral processing industry, a range of grinding conditions exists which include semiautogenous grinding (SAG), rod milling, and conventional ball milling. Each of these mill environments presents a unique environment for grinding media, requiring the application of specific physical and chemical properties for optimum grinding media performance.

get price

Power-based modelling of single-stage AG and SAG mill

The SGI equation uses a transfer size between a SAG and ball mill; it is proposed that a synthetic transfer size of 2100 µm be used to model single-stage SAG mills. 5.9ˇ √˙˝ ˛ . ˚ 0.96 0.985˜ !"# ˝ $ ˝ √˙˝ %&’() (2) where: SGI is the SAG Grindability Index, minutes, P80 is the SAG hydrocyclone overflow 80% passing size, µm

get price

Selection of Comminution Circuits for Improved Efficiency

The benchmark circuit varies with plant capacity and ore competency: • Single stage crush/single stage SAG mills and two stage crush/ball mill circuits are typically selected for low throughput plants (<50 t/h) where personnel costs are a large component of costs. •

get price

Semi-autogenous grinding (SAG) mill liner design and

2007-8-1  SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computer-based modeling of charge motion in SAG mills and on established good design practice. Liner design needs to respond to the process aspects of mill liner action that are critical to good SAG

get price

SAGMILLING.COM .:. Mill Critical Speed Determination

The "Critical Speed" for a grinding mill is defined as the rotational speed where centrifugal forces equal gravitational forces at the mill shell's inside surface. This is the rotational speed where balls will not fall away from the mill's shell. Result #1: This mill would need to spin at RPM to be at 100% critical speed. Result #2: This mill's

get price